QuestionCurrent electricity / Joule heating
Which one of the following expressions has dimensions of energy (here V is the voltage across a resistor of resistance R and I is the current through the resistor, and t is the time)?
- (a) \(\frac{V^2}{I}t\)
- (b) \(\frac{V^2}{R}t\)
- (c) \(\frac{I^2}{R}t\)
- (d) \(\frac{I^2}{V}t\)
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